回答編集履歴
2
update
test
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@@ -146,7 +146,7 @@
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```
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メモリ
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メモリ消費軽減SQLを作成してみました
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```sql
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1
update
test
CHANGED
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@@ -145,3 +145,169 @@
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145
145
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146
146
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147
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```
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149
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メモリを消費軽減SQLを作成してみました
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```sql
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152
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153
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select
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154
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155
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case
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156
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157
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when actions.target_type='user' and actions.target_country_code='jp'
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158
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159
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then users.user_id
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160
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161
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else contents.content_id
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162
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163
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end as content_id
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164
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165
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, case
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166
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167
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when actions.target_type='user' and actions.target_country_code='jp'
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168
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169
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then users.nick_name
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170
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171
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else null
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172
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173
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end as nick_name
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174
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175
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, case
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176
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177
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when actions.target_type='thread' and actions.target_country_code='jp'
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178
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179
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then threads.thread_text
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180
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181
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else null
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182
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183
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end as thread_text
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184
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185
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, case
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186
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187
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when (actions.target_type='user' and actions.target_country_code='jp') or actions.target_type='thread'
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188
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189
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then null
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190
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191
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else contents.content_title
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192
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193
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end as content_title
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194
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195
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, case
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196
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197
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when (actions.target_type='user' and actions.target_country_code='jp') or actions.target_type='thread'
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198
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199
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then actions.target_type
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200
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201
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else content_type
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202
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203
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end as content_type
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204
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205
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, case
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206
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207
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when (actions.target_type='user' and actions.target_country_code='jp') or actions.target_type='thread'
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208
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209
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then actions.target_country_code
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210
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211
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else contents.country_code
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212
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213
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end as country_code
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214
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215
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, max( case when
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216
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217
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actions.action_name='follow' then actions.action_date end
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218
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219
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) as follow_date
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220
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221
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, max( case when
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222
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223
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actions.action_name='favorite' then actions.action_date end
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224
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225
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) as favorite_date
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226
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227
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, jp_voices.voice_id
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228
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229
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, jp_voices.thread_id
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230
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231
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, jp_voices.parent_id
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232
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233
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, jp_voices.voice_type
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234
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235
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, jp_voices.voice_text
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236
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, jp_voices.up
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, jp_voices.down
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240
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241
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from jp_actions actions
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242
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# join
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left join jp_threads threads
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on actions.target_id=threads.thread_id
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248
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249
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left join jp_users users
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250
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on actions.target_id=users.user_id
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252
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253
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left join country_contents contents
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254
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255
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on actions.target_id=contents.content_id
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256
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257
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join jp_voices
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258
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259
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on jp_voices.attach_id=actions.target_id
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260
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261
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and jp_voices.attach_type=case
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262
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263
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when (actions.target_type='user' and actions.target_country_code='jp') or actions.target_type='thread'
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264
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265
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then actions.target_type else content_type end
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266
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267
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and jp_voices.attach_country=case
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268
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269
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when (actions.target_type='user' and actions.target_country_code='jp') or actions.target_type='thread'
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270
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271
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then actions.target_country_code
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272
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273
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else contents.country_code
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274
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+
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275
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end
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276
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+
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277
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and jp_voices.thread_id=1 and jp_voices.voice_type='comment'
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278
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+
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279
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+
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280
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+
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281
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# 彼がactor_idであるfavoriteを指定
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282
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283
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where actions.actor_id=1
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284
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+
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285
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# favorite_dateとfollow_dateが欲しいので以下を指定
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286
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287
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and actions.action_name in ('favorite', 'follow')
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288
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289
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and exists(
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290
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291
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select 0 from jp_actions
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292
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+
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293
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where target_id=actions.target_id and action_name='favorite'
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294
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+
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295
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)
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296
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+
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297
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# 彼とblock関係にあるjpのuserを除外
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298
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299
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and not exists(
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300
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301
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select 0 from jp_actions
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302
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+
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303
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+
where target_type='user' and target_country_code='jp' and action_name='block'
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304
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+
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305
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+
and target_id=actions.target_id and actions.target_type='user'
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306
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+
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307
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+
and actor_id=1
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308
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+
|
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309
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+
)
|
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310
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+
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311
|
+
group by 1,2,3,4,5,6,9,10,11,12,13,14,15;
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|
312
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+
|
|
313
|
+
```
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