1778   GroupConcatCtx *pGCC;  in groupConcatStep()  local
1783   pGCC = (GroupConcatCtx*)sqlite3_aggregate_context(context, sizeof(*pGCC));  in groupConcatStep()
1784   if( pGCC ){  in groupConcatStep()
1786     int firstTerm = pGCC->str.mxAlloc==0;  in groupConcatStep()
1787     pGCC->str.mxAlloc = db->aLimit[SQLITE_LIMIT_LENGTH];  in groupConcatStep()
1790         sqlite3_str_appendchar(&pGCC->str, 1, ',');  in groupConcatStep()
1794         pGCC->nFirstSepLength = 1;  in groupConcatStep()
1801         sqlite3_str_append(&pGCC->str, zSep, nSep);  in groupConcatStep()
1807       if( nSep != pGCC->nFirstSepLength || pGCC->pnSepLengths != 0 ){  in groupConcatStep()
1808         int *pnsl = pGCC->pnSepLengths;  in groupConcatStep()
1811           pnsl = (int*)sqlite3_malloc64((pGCC->nAccum+1) * sizeof(int));  in groupConcatStep()
1813             int i = 0, nA = pGCC->nAccum-1;  in groupConcatStep()
1814             while( i<nA ) pnsl[i++] = pGCC->nFirstSepLength;  in groupConcatStep()
1817           pnsl = (int*)sqlite3_realloc64(pnsl, pGCC->nAccum * sizeof(int));  in groupConcatStep()
1820           if( ALWAYS(pGCC->nAccum>0) ){  in groupConcatStep()
1821             pnsl[pGCC->nAccum-1] = nSep;  in groupConcatStep()
1823           pGCC->pnSepLengths = pnsl;  in groupConcatStep()
1825           sqlite3StrAccumSetError(&pGCC->str, SQLITE_NOMEM);  in groupConcatStep()
1832       pGCC->nFirstSepLength = sqlite3_value_bytes(argv[1]);  in groupConcatStep()
1834     pGCC->nAccum += 1;  in groupConcatStep()
1838     if( zVal ) sqlite3_str_append(&pGCC->str, zVal, nVal);  in groupConcatStep()
1848   GroupConcatCtx *pGCC;  in groupConcatInverse()  local
1852   pGCC = (GroupConcatCtx*)sqlite3_aggregate_context(context, sizeof(*pGCC));  in groupConcatInverse()
1855   if( ALWAYS(pGCC) ){  in groupConcatInverse()
1861     pGCC->nAccum -= 1;  in groupConcatInverse()
1862     if( pGCC->pnSepLengths!=0 ){  in groupConcatInverse()
1863       assert(pGCC->nAccum >= 0);  in groupConcatInverse()
1864       if( pGCC->nAccum>0 ){  in groupConcatInverse()
1865         nVS += *pGCC->pnSepLengths;  in groupConcatInverse()
1866         memmove(pGCC->pnSepLengths, pGCC->pnSepLengths+1,  in groupConcatInverse()
1867                (pGCC->nAccum-1)*sizeof(int));  in groupConcatInverse()
1871       nVS += pGCC->nFirstSepLength;  in groupConcatInverse()
1873     if( nVS>=(int)pGCC->str.nChar ){  in groupConcatInverse()
1874       pGCC->str.nChar = 0;  in groupConcatInverse()
1876       pGCC->str.nChar -= nVS;  in groupConcatInverse()
1877       memmove(pGCC->str.zText, &pGCC->str.zText[nVS], pGCC->str.nChar);  in groupConcatInverse()
1879     if( pGCC->str.nChar==0 ){  in groupConcatInverse()
1880       pGCC->str.mxAlloc = 0;  in groupConcatInverse()
1881       sqlite3_free(pGCC->pnSepLengths);  in groupConcatInverse()
1882       pGCC->pnSepLengths = 0;  in groupConcatInverse()
1890   GroupConcatCtx *pGCC  in groupConcatFinalize()  local
1892   if( pGCC ){  in groupConcatFinalize()
1893     sqlite3ResultStrAccum(context, &pGCC->str);  in groupConcatFinalize()
1895     sqlite3_free(pGCC->pnSepLengths);  in groupConcatFinalize()
1901   GroupConcatCtx *pGCC  in groupConcatValue()  local
1903   if( pGCC ){  in groupConcatValue()
1904     StrAccum *pAccum = &pGCC->str;  in groupConcatValue()